The Quibbler's cover of Harry Potter a.k.a. Undesirable No. 1

The Quibbler is a wizarding tabloid published and edited by Xenophilius Lovegood, father of Luna Lovegood, who gets every issue of The Quibbler when it is published and could be part of the reason behind her odd beliefs. It publishes odd theories and also published Rita Skeeter's interview of Harry Potter on Lord Voldemort's return. Many think that The Quibbler is rubbish, including Hermione Granger, Rita Skeeter, and Dirk Cresswell; the latter referred to it as a "lunatic rag" and when Hermione informed Rita that she would be publishing the interview in the Quibbler she looked at Hermione with disdain.